Smoke Damper - Round Blade - SD-25R

Smoke Damper
Round Blade

The SD-25R smoke damper employs a single round blade for point-of-origin control of smoke in static and dynamic smoke management systems. This unique damper comes standard with mounting plates for interface to round or square openings in masonry, metal stud or wood stud assemblies and is ideal for all round duct applications. The SD-25R, standard construction, is qualified to 2,000 ft/min (10.2 m/s) and 4 in.wg. (1.0 kPa) at 250^oF (177^oC). Optional construction is qualified to 3,000 fpm (15.3 m/s) and 4 in. wg. (1.0 kPa) at 350^oF and may be installed in, or adjacent to vertical walls or partitions, or horizontally in, or adjacent to floors or assemblies.

Specification

Standard Construction
Frame: Integral 16" x 20 ga. (203 x 1.0) galvanized steel with reinforcing beads.
Blades: 14 ga. (2.0) equivalent galvanized steel - round.
Axles: 1/2" (13) diameter plated steel, D<8 (203), 3/4" (19), D≥8 (203).
Linkage: In the air-stream.
Bearings: Bronze oilite, sleeve-type.
Seals: Silicone blade edge seal.
Actuator: 120 VAC, power-open, spring-close, external mount.
Minimum Size: 6" Ø (152 Ø)
Maximum Size: 24" Ø (610 Ø)
Ratings
UL 555S Leakage Class: 1
Maximum Temperature: 350^oF (177^oC)

Technical specification

Unique ref.Smoke-Damper-Round-Blade-SD-25R
Product familyHVAC
Product groupFire-Smoke Dampers
TypeObject (single object)
Date of publishing2024-07-16
Edition number1

Links

Product urlhttps://www.pottorff.com/product/details/131

Classification

BIMobject CategoryHVAC - Ductwork
Uniclass 2015 CodePr_65_65_24_80
Uniclass 2015 DescriptionSmoke dampers
CSI MasterFormat 2014 Code23 33 13.19
CSI MasterFormat 2014 TitleSmoke-Control Dampers
OmniClass Number23-33 29 25
OmniClass TitleSmoke Dampers

Region availability

North America
Anguilla
Antigua and Barbuda
Aruba
Barbados
Belize
Bermuda
British Virgin Islands
Canada
Caribbean Netherlands
Cayman Islands
Collectivity of Saint Martin
Costa Rica
Cuba
Curaçao
Dominica
Dominican Republic
El Salvador
Greenland
Grenada
Guadeloupe
Guatemala
Haiti
Honduras
Jamaica
Martinique
Mexico
Montserrat
Nicaragua
Panama
Puerto Rico
Saint Kitts and Nevis
Saint Lucia
Saint Pierre and Miquelon
Saint Vincent and the Grenadines
Saint-Barthélemy
Sint Maarten
The Bahamas
Trinidad and Tobago
Turks and Caicos Islands
U.S. Virgin Islands
United States